CSI report enhancement for high-speed train scenarios

A user equipment (UE) comprising:

• a processor;
• and
• a memory storing instructions that, when executed by the processor, configure the UE to:
• in response to being within range of a first transmission and reception point (TRP) of a plurality of TRPs associated with a high speed train (HST), decode a CSI reporting configuration communication received from a network, the CSI reporting configuration indicating that CSI reporting is to be performed in an HST scenario and being configured for the HST scenario;
• perform measurements based on the decoded CSI reporting configuration received from the network;
• and
• encode a CSI report communication associated with the HST scenario based on the measurements for transmission to the network,
• wherein two sets of CSI-reference signals (CSI-RSs) are associated with a channel measurement resource (CMR), a first set of the two sets of CSI-RSs corresponding to the first TRP and a second set of the two sets of CSI-RSs corresponding to a second TRP, wherein when:
• the first set and the second set are configured for HST-single frequency network (HST-SFN) without network pre-compensation mode, the first set is configured to be quasi-co-located to a first set of tracking resource signals (TRSs) with quasi-co-location-Type A (QCL-Type A) and the second set of CSI-RSs is configured to be quasi-co-located to a second set of TRSs with QCL-Type A, and
• when the first set and the second set are configured for HST-SFN with network pre-compensation mode, the first set is configured to be quasi-co-located to the first set of TRSs with QCL-Type A and the second set is configured to be quasi-co-located to the second set of TRSs with a special QCL type including at least an average delay and a delay spread.

A non-transitory computer-readable storage medium, the computer-readable storage medium including instructions that when executed by a processor of a user equipment (UE), cause the processor to:

• in response to being within range of a first transmission and reception point (TRP) of a plurality of TRPs associated with a high speed train (HST), decode a CSI reporting configuration communication received from a network, the CSI reporting configuration indicating that CSI reporting is to be performed in an HST scenario and being configured for the HST scenario;
• perform measurements based on the decoded CSI reporting configuration received from the network;
• and
• encode a CSI report communication associated with the HST scenario based on the measurements for transmission to the network,
• wherein two sets of CSI-reference signals (CSI-RSs) are associated with a channel measurement resource (CMR), a first set of the two sets of CSI-RSs corresponding to the first TRP and a second set of the two sets of CSI-RSs corresponding to a second TRP, wherein when:
• the first set and the second set are configured for HST-single frequency network (HST-SFN) without network pre-compensation mode, the first set is configured to be quasi-co-located to a first set of tracking resource signals (TRSs) with quasi-co-location-Type A (QCL-Type A) and the second set of CSI-RSs is configured to be quasi-co-located to a second set of TRSs with QCL-Type A, and
• when the first set and the second set are configured for HST-SFN with network pre-compensation mode, the first set is configured to be quasi-co-located to the first set of TRSs with QCL-Type A and the second set is configured to be quasi-co-located to the second set of TRSs with a special QCL type including at least an average delay and a delay spread.